@provide/nats.ws/dist/umd/index.js

NATS websocket client

!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.nats=e():t.nats=e()}(this,(function(){return function(t){var e={};function r(n){if(e[n])return e[n].exports;var i=e[n]={i:n,l:!1,exports:{}};return t[n].call(i.exports,i,i.exports,r),i.l=!0,i.exports}return r.m=t,r.c=e,r.d=function(t,e,n){r.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:n})},r.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},r.t=function(t,e){if(1&e&&(t=r(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(r.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var i in t)r.d(n,i,function(e){return t[e]}.bind(null,i));return n},r.n=function(t){var e=t&&t.__esModule?function(){return 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supplied",this.messages[n.CONNECTION_CLOSED]="Connection closed",this.messages[n.CONNECTION_CLOSED]="Connection closed",this.messages[n.CONNECTION_REFUSED]="Connection refused",this.messages[n.CONNECTION_TIMEOUT]="Connection timeout",this.messages[n.CONNECTION_DRAINING]="Connection draining",this.messages[n.INVALID_PAYLOAD_TYPE]="Invalid payload type - payloads can be 'binary', 'string', or 'json'",this.messages[n.SUB_CLOSED]="Subscription closed",this.messages[n.SUB_DRAINING]="Subscription draining",this.messages[n.WSS_REQUIRED]="TLS is required, therefore a secure websocket connection is also required"}static getMessage(t){return i.messages.getMessage(t)}getMessage(t){let e=this.messages[t];return e||(e=t),e}}i.messages=new i;class s extends Error{constructor(t,e,r){super(t),this.name="NatsError",this.message=t,this.code=e,this.chainedError=r}static errorForCode(t,e){let r=i.getMessage(t);return new s(r,t,e)}}},function(t,e,r){"use strict";r.d(e,"d",(function(){return 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Uint8Array(r)}function d(t){return Promise.all(t.map(t=>Promise.resolve(t).then(p,p)))}function p(t){return t}},function(t,e,r){"use strict";r.d(e,"a",(function(){return n}));class n{constructor(){this.buffers=[],this.byteLength=0}static concat(...t){let e=0;for(let r=0;r<t.length;r++)e+=t[r].byteLength;let r=new Uint8Array(e),n=0;for(let e=0;e<t.length;e++)r.set(new Uint8Array(t[e]),n),n+=t[e].byteLength;return r.buffer}static fromAscii(t){t||(t="");let e=new ArrayBuffer(t.length),r=new Uint8Array(e);for(let e=0;e<t.length;e++)r[e]=t.charCodeAt(e);return e}static toAscii(t){return String.fromCharCode.apply(null,new Uint8Array(t))}pack(){if(this.buffers.length>1){let t=this.buffers.splice(0,this.buffers.length);this.buffers.push(n.concat(...t))}}drain(t){if(this.buffers.length){this.pack();let e=this.buffers.pop();if(e){let r=this.byteLength;(void 0===t||t>r)&&(t=r);let n=e.slice(0,t);return r>t&&this.buffers.push(e.slice(t)),this.byteLength=r-t,n}}return new Uint8Array(0).buffer}fill(t){t&&(this.buffers.push(t),this.byteLength+=t.byteLength)}peek(){return this.buffers.length?(this.pack(),this.buffers[0]):new Uint8Array(0).buffer}size(){return this.byteLength}length(){return this.buffers.length}}},function(t,e,r){"use strict";var n;r.d(e,"a",(function(){return n})),function(t){t.STRING="string",t.JSON="json",t.BINARY="binary"}(n||(n={}))},function(t,e,r){"use strict";(function(t){r.d(e,"d",(function(){return c})),r.d(e,"i",(function(){return m})),r.d(e,"a",(function(){return w})),r.d(e,"k",(function(){return A})),r.d(e,"j",(function(){return E})),r.d(e,"f",(function(){return O})),r.d(e,"g",(function(){return N})),r.d(e,"c",(function(){return C})),r.d(e,"h",(function(){return T})),r.d(e,"b",(function(){return S})),r.d(e,"e",(function(){return I}));var n=r(3),i=r(5),s=r(0),o=r(1),u=r(6),a=r(2);let h;var c;!function(t){t[t.CLOSED=-1]="CLOSED",t[t.AWAITING_CONTROL=0]="AWAITING_CONTROL",t[t.AWAITING_MSG_PAYLOAD=1]="AWAITING_MSG_PAYLOAD"}(c||(c={}));const f=/^MSG\s+([^\s\r\n]+)\s+([^\s\r\n]+)\s+(([^\s\r\n]+)[^\S\r\n]+)?(\d+)\r\n/i,l=/^\+OK\s*\r\n/i,d=/^-ERR\s+('.+')?\r\n/i,p=/^PING\r\n/i,g=/^PONG\r\n/i,b=/^INFO\s+([^\r\n]+)\r\n/i,y="\r\n".length;function m(){return h||(h=new u.a),`_INBOX.${h.next()}`}class w{constructor(t){this.lang="javascript",this.pedantic=!1,this.protocol=1,this.verbose=!1,(t=t||{}).token&&(this.auth_token=t.token),t.noEcho&&(this.echo=!1),t.userJWT&&("function"==typeof t.userJWT?this.jwt=t.userJWT():this.jwt=t.userJWT),Object(o.b)(this,t)}}function A(){return{sid:0,subject:"",received:0}}function E(){return{token:"",subject:"",received:0,max:1}}class O{constructor(t,e){this.token=t.token,this.protocol=e}cancel(){this.protocol.cancelRequest(this.token,0)}}class N{constructor(t,e){this.sid=t.sid,this.protocol=e}unsubscribe(t){this.protocol.unsubscribe(this.sid,t)}hasTimeout(){let t=this.protocol.subscriptions.get(this.sid);return null!==t&&null!==t.timeout}cancelTimeout(){let t=this.protocol.subscriptions.get(this.sid);null!==t&&null!==t.timeout&&(clearTimeout(t.timeout),t.timeout=null)}setTimeout(t,e){let r=this.protocol.subscriptions.get(this.sid);return null!==r&&(r.timeout&&(clearTimeout(r.timeout),r.timeout=null),r.timeout=setTimeout(e,t),!0)}getReceived(){let t=this.protocol.subscriptions.get(this.sid);return t?t.received:0}drain(){return this.protocol.drainSubscription(this.sid)}isDraining(){let t=this.protocol.subscriptions.get(this.sid);return!!t&&t.draining}isCancelled(){return null===this.protocol.subscriptions.get(this.sid)}}class C{constructor(){this.reqs={},this.length=0}init(){return this.baseInbox=`${m()}.`,this.baseInbox}add(t){isNaN(t.received)||(t.received=0),this.length++,this.reqs[t.token]=t}get(t){return t in this.reqs?this.reqs[t]:null}cancel(t){t&&t.timeout&&(clearTimeout(t.timeout),t.timeout=null),t.token in this.reqs&&(delete this.reqs[t.token],this.length--)}getToken(t){let e=t.subject||"";return 0===e.indexOf(this.baseInbox)?e.substring(this.baseInbox.length):null}dispatcher(){let t=this;return function(e){let r=t.getToken(e);if(r){let n=t.get(r);n&&(n.received++,n.callback(e),n.max&&n.received>=n.max&&t.cancel(n))}}}}class T{constructor(){this.subs={},this.sidCounter=0,this.length=0}add(t){return this.sidCounter++,this.length++,t.sid=this.sidCounter,this.subs[t.sid]=t,t}setMux(t){return this.mux=t,t}getMux(){return this.mux}get(t){return t in this.subs?this.subs[t]:null}all(){let t=[];for(let e in this.subs){let r=this.subs[e];t.push(r)}return t}cancel(t){t&&t.timeout&&(clearTimeout(t.timeout),t.timeout=null),t.sid in this.subs&&(delete this.subs[t.sid],this.length--)}}class S{constructor(t,e="string"){this.msg={},this.msg.subject=t[1],this.msg.sid=parseInt(t[2],10),this.msg.reply=t[4],this.msg.size=parseInt(t[5],10),this.length=this.msg.size+y,this.payload=e}fill(e){if(this.buf?this.buf=a.a.concat(this.buf,e):this.buf=e,this.length-=e.byteLength,0===this.length){switch(this.msg.data=this.buf.slice(0,this.buf.byteLength-2),this.payload){case n.a.JSON:this.msg.data=t.from(this.msg.data).toString("utf8"),this.msg.data=JSON.parse(this.msg.data);break;case n.a.STRING:this.msg.data=t.from(this.msg.data).toString("utf8");break;case n.a.BINARY:}this.buf=null}}}class I{constructor(t,e){this.infoReceived=!1,this.payload=null,this.pongs=[],this.pout=0,this.state=c.AWAITING_CONTROL,this.noMorePublishing=!1,this.options=t,this.clientHandlers=e,this.subscriptions=new T,this.muxSubscriptions=new C,this.inbound=new a.a,this.outbound=new a.a}static connect(t,e){return new Promise((r,n)=>{let o=new I(t,e);o.connectError=n;let u=t.connectTimeout||1e4,a=new Promise((t,e)=>{let r=setTimeout(()=>{e(s.c.errorForCode(s.a.CONNECTION_TIMEOUT))},u);o.pongs.push(()=>{clearTimeout(r),t(!0)})});i.a.connect(t,o,t.debug).then(t=>{o.transport=t}).catch(t=>{o.connectError=null,n(t)}),a.then(()=>{o.connectError=null,r(o)}).catch(t=>{o.connectError=null,n(t)})})}static toError(t){let e=t?t.toLowerCase():"";return-1!==e.indexOf("permissions violation")?new s.c(t,s.a.PERMISSIONS_VIOLATION):-1!==e.indexOf("authorization violation")?new s.c(t,s.a.AUTHORIZATION_VIOLATION):new s.c(t,s.a.NATS_PROTOCOL_ERR)}processInbound(){let t=null;for(;this.inbound.size();){switch(this.state){case c.CLOSED:return;case c.AWAITING_CONTROL:let e=this.inbound.peek(),r=Object(o.c)(e);if(t=f.exec(r))this.payload=new S(t,this.options.payload),this.state=c.AWAITING_MSG_PAYLOAD;else if(t=l.exec(r));else{if(t=d.exec(r))return void this.processError(t[1]);if(t=g.exec(r)){this.pout=0;let t=this.pongs.shift();t&&t()}else if(t=p.exec(r))this.transport.write(Object(o.a)("PONG 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0===e.max&&(clearTimeout(e.timeout),e.timeout=null),e.callback&&e.callback(t.msg),void 0!==e.max&&e.received>=e.max&&this.unsubscribe(e.sid))}sendCommand(t){let e;e="string"==typeof t?Object(o.f)(t):t,t&&this.outbound.fill(e),1===this.outbound.length()?setTimeout(()=>{this.flushPending()}):this.outbound.size()>8192&&this.flushPending()}publish(e,r,n){if(this.isClosed())throw s.c.errorForCode(s.a.CONNECTION_CLOSED);if(this.noMorePublishing)throw s.c.errorForCode(s.a.CONNECTION_DRAINING);let i,u=t.byteLength(r);i=(n=n||"")?`PUB ${e} ${n} ${u}\r\n`:`PUB ${e} ${u}\r\n`,this.sendCommand(Object(o.a)(i,r))}request(t){return this.initMux(),this.muxSubscriptions.add(t),new O(t,this)}subscribe(t){let e=this.subscriptions.add(t);return e.queue?this.sendCommand(`SUB ${e.subject} ${e.queue} ${e.sid}\r\n`):this.sendCommand(`SUB ${e.subject} ${e.sid}\r\n`),new N(e,this)}unsubscribe(t,e){if(!t||this.isClosed())return;let r=this.subscriptions.get(t);r&&(e?this.sendCommand(`UNSUB ${t} ${e}\r\n`):this.sendCommand(`UNSUB ${t}\r\n`),r.max=e,(void 0===r.max||r.received>=r.max)&&this.subscriptions.cancel(r))}cancelRequest(t,e){if(!t||this.isClosed())return;let r=this.muxSubscriptions.get(t);r&&(r.max=e,(void 0===r.max||r.received>=r.max)&&this.muxSubscriptions.cancel(r))}flush(t){this.pongs.push(t),this.sendCommand("PING \r\n")}processError(t){let e={error:I.toError(t)};this.errorHandler(e)}sendSubscriptions(){let t=[];this.subscriptions.all().forEach(e=>{e.queue?t.push(`SUB ${e.subject} ${e.queue} ${e.sid} \r\n`):t.push(`SUB ${e.subject} ${e.sid} \r\n`)}),t.length&&this.transport.write(Object(o.a)(t.join("")))}openHandler(t){}closeHandler(t){this.close(),this.clientHandlers.closeHandler()}errorHandler(t){let e;t&&(e=t.error),this.handleError(e)}messageHandler(t){this.inbound.fill(t.data),this.processInbound()}close(){this.transport.close(),this.state=c.CLOSED}isClosed(){return this.transport.isClosed()}drain(){let t=this.subscriptions.all(),e=[];return t.forEach(t=>{let r=this.drainSubscription(t.sid);e.push(r)}),new Promise(t=>{Object(o.e)(e).then(e=>{this.noMorePublishing=!0,setTimeout(()=>{this.close(),t(e)})}).catch(()=>{})})}drainSubscription(t){if(this.isClosed())return Promise.reject(s.c.errorForCode(s.a.CONNECTION_CLOSED));if(!t)return Promise.reject(s.c.errorForCode(s.a.SUB_CLOSED));let e=this.subscriptions.get(t);if(!e)return Promise.reject(s.c.errorForCode(s.a.SUB_CLOSED));if(e.draining)return Promise.reject(s.c.errorForCode(s.a.SUB_DRAINING));let r=e;return new Promise(t=>{r.draining=!0,this.sendCommand(`UNSUB ${r.sid}\r\n`),this.flush(()=>{this.subscriptions.cancel(r),t(r)})})}flushPending(){if(this.infoReceived&&this.outbound.size()){let t=this.outbound.drain();this.transport.write(t)}}initMux(){if(!this.subscriptions.getMux()){let t=this.muxSubscriptions.init(),e={sid:0,subject:"",received:0};e.subject=`${t}*`,e.callback=this.muxSubscriptions.dispatcher(),this.subscriptions.setMux(e),this.subscribe(e)}}handleError(t){this.connectError&&(this.connectError(t),this.connectError=null),this.close(),this.clientHandlers.errorHandler(t)}}}).call(this,r(7).Buffer)},function(t,e,r){"use strict";r.d(e,"a",(function(){return i}));var n=r(0);class i{constructor(t){this.stream=null,this.closed=!1,this.debug=!1,this.listeners={},this.handlers=t}static connect(t,e,r=!1){return new Promise((s,o)=>{let u,a=new i(e);a.debug=r,a.stream=new WebSocket(t.url),a.stream.binaryType="arraybuffer",a.listeners={},a.stream.onclose=function(t){a.trace("ws closed",t),a.closed||(u?(a.handlers.closeHandler(t),a.close()):(clearTimeout(void 0),o(n.c.errorForCode(n.a.CONNECTION_CLOSED))))},a.stream.onerror=function(t){let e;if(t&&(e=t.error,!e)){let r=t.message;e=r?new 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 * @license  MIT
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